Omron SYSMAC mini SP10 Operation Manual page 56

Basic Programming
Block Block
a1 b1
0000 0001 0004
0002 0003 0008
Block Block
a2 b2
Block Block
a b
0000
0002
0004 0005
0106 0107
48
ever, OR LOAD must be used to combine the top and bottom blocks on both
sides, i.e., to combine a1 and a2; b1 and b2.
0005
0103
0009
The following type of diagram can be coded easily if each block is coded in
order: first top to bottom and then left to right. In the following diagram,
blocks a and b would be combined using AND LOAD as shown above, and
then block c would be coded and a second AND LOAD would be used to
combined it with the execution condition from the first AND LOAD. Then
block d would be coded, a third AND LOAD would be used to combine the
execution condition from block d with the execution condition from the sec-
ond AND LOAD, and so on through to block n.
Block a Block b
The following diagram requires an OR LOAD followed by an AND LOAD to
code the top of the three blocks, and then two more OR LOADs to complete
the mnemonic code.
0001
0003
Although the program will execute as written, this diagram could be drawn as
shown below to eliminate the need for the first OR LOAD and the AND
LOAD, simplifying the program and saving memory space.
Address Instruction
000 LD
001 AND NOT
002 LD NOT
003 AND
004 OR LD
005 LD
006 AND
007 LD
008 AND
009 OR LD
010 AND LD
011 OUT
Block c Block n
Address Instruction
LR 0000
000 LD
001 LD
002 LD
003 AND NOT
004 OR LD
005 AND LD
006 LD NOT
007 AND
008 OR LD
009 LD NOT
010 AND
011 OR LD
012 OUT
Section 3-4
Operands
0000
0001
0002
0003
—
Blocks a1
0004 and a2
0005
0008
0009
Blocks b1
—
and b2
—
Blocks a
and b
0103
0100
Operands
0000
0001
0002
0003
--
--
0004
0005
--
0106
0107
--
LR 0000